PourN Restore concrete driveway cleaner combines the cleaning power of acitrus degreaser with a non-leaching absorbent powderto create Micro-Extraction Technology™. What this means is that oil,grease and fluids will be lifted from your concrete surface to allow foreasy disposal. Pour N Restore soaks right into the open pores of a concretesurface and molecularly locks onto stain particles. As it dries, Pour NRestore pulls the absorbed fluids up to the surface then transforms itselfinto a sweepable powder.